Cosmetic nitro perks and user tags?

Hey fellow discord users. I was sitting in the shower, when i was struck by a brilliant idea. Maybe its just me, but i talk a lot on discord. So I was thinking, what if you could have like, a border around your image depending on how many messages you've sent. And as an added nitro perk (hence why i put it under "merchandise") you could make a custom one.

I don't know a lot about technology so maybe this isn't even possible. Another thing that just struck me as I'm writing this is how some people claim to be others. For example someone might make their name FaZe Whatever#2348 to sometimes try and act as an imposer. With this idea of somehow implementing a custom tag feature where you could make a tag that could only be handed out by the admins of one server. Essentially a fancy version of a verified user.